Journal-bearing



(No Model.)

R. W. HARDIE.

JOURNAL BEARING.

Patented May 5, 1885.

5mm/wo@ oermarda'e.

@mom

lllhn www.

Lin.

N. PETERS, PhclLikhngnpher, walhingtnrn D. C.

UNITED STATES PATENT OFFICE.

ROBERT W. HARDIE, OF ALBANY, NEV YORK.

JOURNAL-BEARING.

SPECIFICATION forming part of Letters Patent No. 317,345, dated May 5, 1885.

Application filed March 17, 1385.

To @ZZ whom t may concern:

Be it known that I, ROEERTW. HRDTE, a citizen of the Untied States, residing at Albany, in the county of Albany and State of New York, have invented certain new and useful Improvements in Journal-Bearings for Grinding and Polishing Machines; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as willrenable others skilled in the art to which it appertains to make and use the same.

My invention relates to certain new and useful improvements in journal-box bearings for grinding and polishing machines, and is designed to insure a true and even wearing of the bearings to compensate for shocks imparted to the shaft by irregularities in the contour of the grinding-surface, and to guard against the liability of the grinding-wheels to burst in consequence of the constant pounding against certain parts-of their surfaces occa` sioned by irregular wearing of the abrading parts.

In the accompanying drawings and description I have illustrated and described my invention as applied to an einery-wheel grinder of a well-known type.

Figure 1 represents a perspective view of my invention in the machine to which it is applied. Fig. 2 represents a vertical crosssection through one of the bearing-standards. Fig. 3 represents in detail perspective a modification of the elastic bearing-box cushions.

Similar letters refer to similar parts throughout the several views.

A represents a suitable base-block having side stanchions hollowed out centrally, as shown, and forming yokes through which the shaft C of the grinding or polishing machine extends. Said shaft rotates in suitable bearing-boxes, K K, which are provided at top and bottom with eyebolts D, secured thereto.

Similar eyebolts, E, link into the eyebolts D, and, passing through suitable apertures in the yoke, are secured above and below the same by means of a screw-nut, B, between which and the yoke are interposed a perforated rubber washer, G, and metal washer F. Instead of the rubber washer G, there may be substituted, without departing from the spirit of my invention, any other washer having similar elas- (No model.)

tic properties-as, for instance, the curved plate, of spring metal, N, shown in Fig. 3, or the coiled spring N, also shown in said figure.

In substitution for the eyebolts D and E, there may also be used, if desired, any other appropriate fiexible joint having similar capabilities, my invention being of a generic character. Thus, instead of the eyebolt, there may be attached to. the bearingbox a plate bearing a half-link, into which the eyebolt of the yoke engages. I prefer, however, for most purposes, to employ the specific construction and arrangement illustrated in the drawings, on account of the simplicity and durability of the arrangement of part-s and their economy of production.

The operation of my invention is as follows: When the parts are in the position shown, it will be obvious that when any pressure is applied to an emery-wheel revolving on the shaft C the box B will be moved from its normal position and the eyebolts Efrespectively drawn inward, forcing the bolts B down upon the metallic washers and the latter upon the tlexible washers. 4Any increase or diminution in the pressure exerted by the article to be ground or polished upon the grinding-wheel will produce a greater or less variation in the movement of the box and it-s flexible connections, the rubber washer or its equivalent taking up and deadening all vibration ofthe shaft which would otherwise be caused by an unevenlybalanced wheel.

By the use of my invention, moreover, in addition to the even wearing of the bearingboxes, heating of the spindle is obviated and danger of the wheels bursting entirely prevented. It will also be evident that an emerywheel whose surface,by reason of any inequality in the distribution and tenacity of the abrading material, would otherwise wear out rapidly at particular points of the periphery, rendering the entire wheel worthless, will, by reason of my invention, be preserved for a much greater length of time.

Having thus described my invention, what I clam,and desire to secure by Letters Patent, 1s-

1. In a journal-bearing for grinding and polishing machines, the combination, with the sustainingyokes, of journal or bearing boxes suspended freely within said yokes,and capable of a limited movement therein, substantially as described.

2. In a journal-bearing for grinding` and polishing machines, the combination, with the sustaining-yokes, ofajournal or bearing box and ilexible or loose-jointed connections between the said box and yoke, supported upon resilient cushions, substantially as described.

3. In a journal-bearing for grinding and polishing machines, the combination, with the sustaining-yokes, of a journal or bearing box, and iexible or loose-jointed connections between said box and yoke, supported on rubber cushions, substantially as described.

Y4f. In a journal-bearing for grinding and polishing machines, the combination, with the sustaining-yokes, of a journal or bearing box and eyebolts connected therewith and supported upon the yoke by resilient cushions, Substantially as described.

sustaining-yokes, of the sha-ft C, the journal- 3o boxes K, eyebolts D E, rubber cushions G, metallic cushion F, and tightening-bolt I-I, substantially as described.

In testimony whereof I afx my signature in presence of two witnesses.

RQBERT XV. HARDIE.

`Witnessesz ROBERT G. Soi-IERER, GEO. XV. KIRCHWEY. 

